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Definition: Zeros of a function – where the height of the graph is zero. Comparable to x-intercepts on the real number system. To find x-intercepts…replace.

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Presentation on theme: "Definition: Zeros of a function – where the height of the graph is zero. Comparable to x-intercepts on the real number system. To find x-intercepts…replace."— Presentation transcript:

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2 Definition: Zeros of a function – where the height of the graph is zero. Comparable to x-intercepts on the real number system. To find x-intercepts…replace “y” with zero. To find zeros…replace “y” with zero.

3 Examples: Find the zeros of the following functions. = 3x - 2 Where is the y? f(x) Replace the y with zero. 0 Solve for x. x = 2 / 3

4 Examples: Find the zeros of the following functions. = x 2 + 4x Where is the y? f(x) Replace the y with zero. 0 Solve for x. x = 0 & x = -4

5 Examples: Find the zeros of the following functions. =  3x - 4 Where is the y? f(x) Replace the y with zero. 0 Solve for x. x = 4 / 3

6 Examples: Find the zeros of the following functions. = 3x – 2 x - 7 Where is the y? f(x) Replace the y with zero. 0 Solve for x. x = 2 / 3

7 Remember: The zeros to all the previous questions are the places where their graphs cross over the x-axis.


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